Rotary ice chipper



Feb., 25, 1947. s. M. UDDEN ROTARY ICE CHIPPER Filed July 28, 1944 2 Sheets-Sheet 1 m5 ww w M M, W

l um Feb. 25, 1947. vs. M. UDDEN 2,415,422

ROTARY ICE CHIPPER Filed July 28, 1944 2 sheets-sheet 2 Patented Feb. 25, 1947 UNITED `STATES PATENT OFFICE ROTARY ICE CHIPPER Svante M. Udden, VCorpus Christi, Tex.

Application July 28, 1944, Serial No. 546,996

3 Claims. 1

IThis invention relates to an improved ice chipper and in particular to one in which the picks or chipping elements are mounted on two separate rolls rotating in the same direction, preferably at different speeds, and between which the ice is chipped.

My invention has for its object the provision of a chipper which will chip ice into either large or small pieces and in which there is produced a minimum of iinely divided ice or snow. This is accomplished in part by rotating the aforesaid rolls in the same direction so as to eliminate the crushing action which results from the prior art devices in which the rolls are rotated in opposite directions or in which only one roll is used. Oppositely rotating rolls have the effect of crushing a chunk of ice as it is caught by the downward moving picks on the opposite side 'and forced through the constricted opening between the two rolls. A single roll crusher with picks attacking the ice heid against a plate and comb has the effect of cutting or crushing a chunk of ice as it is caught by the downwardly moving picks and forced through the constricted opening between the teeth of the comb.

In my invention, the picks of one roll tend to force one side of a chunk of ice upwardly while the picks of the other roll force the opposite side downwardly. This results in the rotation of the chunk of ice, thereby exposing new surfaces of the chunk to the downwardly moving picks.

It is also an object of my invention to provide an improved feeding arrangement whereby the action of the upwardly moving picks will be limited in extent so as not to remove the chunk of ice from engagement with the downwardly moving picks.

It is a further object of this invention to provide, in an ice chipper, an improved arrangement of the elements whereby the picks are forced into the ice in a substantially straight direction, thereby exerting a splitting or chipping action on the ice.

Other objects, features and advantages of my invention will become apparent as this descrip-` tion proceeds.

With reference now to the drawings, in which like reference numerals indicate like parts- Fig. 1 is a sectional elevation of a preferred embodiment of my invention, the section being taken along the line I-I of Fig. 2;

Fig. 2 is a section taken along line 22 of Fig. l;

Fig. 3 is a sectional detail taken along line 3-3 of Fig. 2; and

Fig. 4 is adetail view ofthe sliding journal shown inFig. 3.

In the drawings, the reference numeral I designates generally a housing which comprises side Walls Hand l2, and end walls I3 and I4. The end walls are extended downwardly beyond the sidewalls and serve as legs for supporting the ice chipper. The end wall I4 is provided with an opening I5 into which chunks of ice may be fed` A top I6 is also provided which is preferably secured to the side and end walls to resist any manual feeding pressureapplied to the ice, al-

' though it may also be made removable for inlspection or repair of the mechanism.

Journals Il and I8 are set in side walls II and I2 respectively, and a roll 2I is journaled therein. A second roll 22 is journaledin sliding journals I 9 and 20 so that the roll may .be moved toward or away from roll 2l. Each ofthe side walls II and I2 are provided with horizontally disposed slots, as indicated by reference numeral 32 with respect to the side wall I2. The journals I9 and 29 are slidably disposed in these slots.

Journal 20 comprises a central body portion 33 tting in the slot 32 and having iianges 34 to maintain it in the slot. The outer and lower iiange is enlarged, as indicated by reference numeral 35, and is provided with a tapped bore 36. The configuration of the journal 20 is best shown in Fig. 4.

A worm 3l is mounted on the exterior of the Side wall I2 in bearings V38. `One end of the worm is provided with a hand wheel 39 by means of which the worm may be rotated to ,cause the journal 20 to slide in the slot 32. It will be seen from the drawings that the worm extends thro-ugh the sliding journal 2|), and cooperates with the tapped bore 36. Y

VJournal I9 is similar in construction to journal 20, and a cooperating worm 4|] is similarly mounty ed in bearings 4I on the exterior of side wall I i. A hand wheel 42 is also provided for rotation of the worm.

It will be seen that hand wheels 39 and 42 may be rotated to adjust the lateral position of roll 22 whereby the .average size of the chipped ice pieces may be varied,

A motor 25 drives the roll 2| through suitable gearing 2B in a clockwise direction, as shown in Fig. 1. The roll 22 is driven in the same direction by means of a chain v29 which` engages gears 21 and 28 associated with the rolls 2| and 22 respectively.

It will be seen that at the point where the picks 23l are substantially opposite to the picks 24, the

3 picks 23 will be moved downwardly and the picks 24 will be moved upwardly.' The roll 22 is preferably driven from roll 2| at a lower speed.

A horizontally disposed feeding shelf 30 is suitably mounted within the housing and is aligned with the opening '|5. The feeding shelf. terminates in a downwardly extending comb 3|, the separate elements of which feed between the picks 24. The comb is spaced sufficiently close to the surface of the roll 22 so that the picks 24 extend beyond the surface of the comb 3|. Thus it will be seen that a chunk of ice resting on the' comb will be engaged by the upwardly.- moving picks 24 in such a manner that the ice 'will tend lr to be rotated. T-he picks 23 slant forwardlyand are curved in such a manner that they tend to bite intov 'a A made therein without departing from the spirit .'p'arallel axes, means to drive said rolls so that a lesser speed, and a comb overlying said sec- Y chunk of ice in a substantially straight direction as the ice is rotated by the combined action of the picks 23 and 24. The provision ofthe comb 3| and the shelf 30 also prevents the picks 24 from carrying the ice downwardlyon theY outside of the roll -22. Y

The feeding shelf 30 serves to support a second chunk of ice in the position wherein'itis ready to be fed into the bite between the two rolls when the first chunk of ice has beenl broken4 up into smaller pieces. These smaller pieces dropdown between the two rolls and can be withdrawn from the side of the housing lil.

I have found that satisfactory'results are ob.-` tained by causing the roll 2| to rotate at sixteen revolutions per minute whereas the` roll 22 is rotated at about four revolutions per minute. The average size of thechipped ice pieces may be varied by varying the distance between the centers of the two rolls.

As indicated above, this distance is varied by turning the hand wheels 39 and 42. The chain 29 has 'a certain amountl of slack which will permit a certain amount of variation. An idler 43 may be provided for the chain totake up this slack. f f

If it be desired to vary the distance between the centers of the two rolls by an amount greater than that permitted bythe slack of the chain, it is contemplated that additional chains may be provided which are of different length. By providing a series of three or four chains of progres, sively greater length, it will be seen that any desired distance between the roll centers may be obtained, and hence any desired average ice size.

Means are also provided to shift the position of the feeding shelf and comb 3| in accordance with the shifting of the roll 22. To accomplish this, the feeding shelf is disposed on transverse supports 46 and is secured thereto by bolts `45 which extend through longitudinally disposed slots 44 in the feeding shelf. By loosening the bolts, the shelf and comb can be shifted to any desired position, and then the bolts may be tightened up to secure the shelf and comb in that adjusted position.

It will be seen that the device herein disclosed provides a minimum amount of crushing action due to the fact that the ice is caught and suspended between the two series of oppositely moving picks. This also results in causing the ice to be rotated, thereby exposing new surfaces to the picks and eliminating a cutting Vor crushing action.

Although I have disclosed only a preferred embodiment of my invention, it willV be understood 'that various changes and modifications may be the picks of said primary chipping roll, at the bite of said rolls, will be moved downwardly and so that the picks of said secondary chipping roll, at the bite of said rolls, will be moved upwardly at ondarygchipping roll so as to limit the extent of Contact of said upwardly moving picks with a piece of icedisposed at the bite of said rolls.

2. An ice chipper having a primary chipping roll including picks projecting from the surface thereof, and a secondary chipping roll including picks projecting from the surface thereof, said rolls being mounted on substantially parallel axes, means to drive said rolls so that the picks of said .primary chipping roll, at the bite of said rolls, will'be `moved downwardly and so that the picks of said secondary chipping roll, at the bite of said rolls, will be moved upwardly at a lesser speed, and a shelf disposed above said secondary chipping roll and terminating in a comb portion extending downwardly toward said Vbite and spaced suciently close to said secondary chipping roll that said upwardly moving picks extend there-v through.V Y

3. An ice chipper comprising a housing having an opening at one end thereof, spaced primary and secondary chipping rolls mounted for cooperation with each other at the other end of said housing, means to rotate said rolls in the same direction and at different peripheral speeds so as to cause a differential chipping action, and a shelf disposed within said housing which extends from said opening to a point abovesaid secondary chipping roll and provided with a downwardly extending slotted portion which terminates in the bite between said rolls, the axis of said secondary chipping roll being disposed in move in opposite directions, the chipping ele- A@ments of said secondary chipping roll moving upwardly and extending through said slotted portion. l

SVANTE M. UDDEN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 307,913 Chandler Nov. 11, 1884 385,842 Creager July 3, 1888 733,454 Bloom July 14, 1903 107,184 Lister Sept. 6, 1870 147,316 Ferguson Feb. 10, 1847 484,258 Sloan Oct. l1l, 1892 957,038l Dalgety May 3, 1910 1,024,594 Nolan et al Apr. 30, 1912 Lilly Apr. 1, 1941 

